SOLUCIONS 3.1 .pdf
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Original filename: SOLUCIONS 3.1.pdf
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Author: SARA ALVAREZ CANTERO
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SOLUCIONS 3.1
TIR OBLIC
(SOLUCIONS 3, el següent document, fa referència a SOLUCIONS
3.2, que és un tir horitzontal)
COMPOSICIÓ DE MOVIMENTS
Eix y
Primer extreim la velocitat inicial
V=2cos30
V=1’73m/s
Calculam el temps
1
𝑥 = 𝑥! + 𝑣! 𝑡 − 𝑔𝑡 !
2
0=18,7-‐1,73.t-‐4,9t²
t= 1,76s
L’objecte tocarà terra passats 1’76s
Eix x
Necessitam la velocitat a l’eix x = 2sin30 = 1m/s
Calculam l’abast topogràfic
𝑥 = 𝑥! + 𝑣 · 𝑡
x=1’76m
L’objecte ha avançat 1’76m en horitzontal
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